Printable Quiznos Coupon September 2009! By Coupon Dad on September 11, 2009 - Leave a Comment Quiznos Coupon for September and October 2009! Printable Quiznos Coupon Buy one sub at regular price and a soda and get a second sandwich of equal or less value FREE! This coupon expires on October 12th, 2009. Thanks Webfloss!